It will add an extra aspect to the research if the candidates typing ability is cross-referenced with his or her examination input preferences and performance.  The simplest way of measuring a person's typing ability is by reference to the Words Per Minute (WPM) that they can accurately type.  There are numerous online sites which will enable you to find out what your WPM speed is.  Here are links to some of them.  If you take a test, and you complete the questionnaire, please add your WPM score to it.

Links:

typeonline.co.uk

typing test.com

powertyping.com

free typing games

free typing test